El costo de los repuestos para un automóvil fue $67.
El monto total que el mecánico cobró por reparar este
automóvil fue $326. Escribe una ecuación para obtener
el número de horas cobradas por reparar este automóvil.

could you translate it in english

Step-by-step explanation:

...

option a is correct.

step-by-step explanation:

scale factor: it is used to find proportional measurements.

proportions means having the same ratio.

scale factor is the ratio of the model measurement to the actual measurement in a simplest form.

or we can say that the ratio of any two corresponding lengths in two similar geometric figures

if the scale factor is more than 1, then it is an enlargement,

if the scale factor less than 1, then it is a reduction.

given the two geometric figure:

by definition of proportions, we have

or